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Which option best reflects Rule 23 — Power-driven Vessels Underway?
A
Anchor signals use the bell every minute, not the 2-minute whistle interval.
B
Must not be mistakable for a prescribed signal or navigation aid.
C
Vessels which comply with earlier regulations may be exempted from certain requirements for specified periods.
D
<12m PDV may show 1 all-round white + sidelights instead of masthead + stern.